/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package br.unesp.demac.bcc.soo.clarus.servlets;

import br.unesp.demac.bcc.soo.clarus.bean.Aluno;
import br.unesp.demac.bcc.soo.clarus.bean.Emprestimo;
import br.unesp.demac.bcc.soo.clarus.dao.EmprestimoDAO;
import br.unesp.demac.bcc.soo.clarus.dao.EmprestimoDAOImp;
import java.io.IOException;
import java.sql.SQLException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author esaheki
 */
@WebServlet(name = "RenovacaoServlet", urlPatterns = {"/RenovacaoServlet"})
public class RenovacaoServlet extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        
        String page = "";
        HttpSession session = request.getSession(true);
        Aluno aluno = (Aluno) session.getAttribute("aluno");
        if (aluno == null) {
            page = "erro.jsp";
            session.setAttribute("mensagem", "Sessão Invalida<br>Favor autenticar-se no sistema!");
        } else {
            String histIndex = request.getParameter("historico");
            String pendIndex = request.getParameter("pendentes");
            try {    
                if (histIndex != null) {
                    List<Emprestimo> historico = (List<Emprestimo>) session.getAttribute("historico");
                    EmprestimoDAO edao = new EmprestimoDAOImp();
                    edao.renovarEmprestimo(historico.get(Integer.parseInt(histIndex)));
                    page = "HistoricoServlet?action=historico";
                    session.setAttribute("historico", null);
                } else if (pendIndex != null) {
                    List<Emprestimo> pendentes = (List<Emprestimo>) session.getAttribute("pendentes");
                    EmprestimoDAO edao = new EmprestimoDAOImp();
                    edao.renovarEmprestimo(pendentes.get(Integer.parseInt(pendIndex)));
                    page = "HistoricoServlet?action=renovacao";
                    session.setAttribute("pendentes", null);
                } else {
                    page = "erro.jsp";
                    session.setAttribute("mensagem", "Argumentos Inválidos.");
                }
                
            } catch (SQLException ex) {
                page = "erro.jsp";
                session.setAttribute("mensagem", "Erro ao renovar obra.");
            } 
        }

        request.getRequestDispatcher(page).forward(request, response);
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
